{"id":102176,"date":"2021-11-02T03:36:46","date_gmt":"2021-11-02T01:36:46","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-dopuskayushhaya-podstanovku-javascript-koda-cherez-wordpress-plagin-optinmonster"},"modified":"2021-11-02T03:36:46","modified_gmt":"2021-11-02T01:36:46","slug":"uyazvimost-dopuskayushhaya-podstanovku-javascript-koda-cherez-wordpress-plagin-optinmonster","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/uyazvimost-dopuskayushhaya-podstanovku-javascript-koda-cherez-wordpress-plagin-optinmonster","title":{"rendered":"S\u00e5rbarhed, der tillader indspr\u00f8jtning af JavaScript-kode via WordPress-pluginet OptinMonster","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I WordPress-udvidelsen OptinMonster, som har over en million aktive installationer og anvendes til at generere pop-up-beskeder og tilbud, er der opdaget en s\u00e5rbarhed (CVE-2021-39341), der muligg\u00f8r inds\u00e6ttelse af egen JavaScript-kode p\u00e5 en hjemmeside, der bruger denne udvidelse. S\u00e5rbarheden er blevet rettet i version 2.6.5. For at blokere adgangen via kompromitterede n\u00f8gler efter opdateringen har udviklerne af OptinMonster annulleret alle tidligere oprettede API-n\u00f8gler og indf\u00f8rt begr\u00e6nsninger for brugen af n\u00f8gler fra WordPress-websteder til at \u00e6ndre OptinMonster-kampagner. <\/p>\n

Problemet skyldes tilstedev\u00e6relsen af REST-API \/wp-json\/omapp\/v1\/support, som kunne tilg\u00e5s uden autentificering \u2014 anmodningen blev udf\u00f8rt uden yderligere kontroller, n\u00e5r referer-overskriften indeholdt teksten \"https:\/\/wp.app.optinmonster.test\" og n\u00e5r HTTP-anmodningstypen blev sat til \"OPTIONS\" (dette blev overskrevet ved hj\u00e6lp af HTTP-overskriften \"X-HTTP-Method-Override\"). Blandt de data, der blev returneret ved henvendelse til det n\u00e6vnte REST-API, var der en adgangsn\u00f8gle, som gjorde det muligt at sende anmodninger til enhver REST-API-handler. <\/p>\n

Ved hj\u00e6lp af den opn\u00e5ede n\u00f8gle kunne angriberen tr\u00e6ffe \u00e6ndringer i enhver pop-up, der vises ved hj\u00e6lp af OptinMonster, herunder organisere udf\u00f8relsen af sin egen JavaScript-kode. N\u00e5r angriberen fik mulighed for at udf\u00f8re sin egen JavaScript-kode i konteksten af webstedet, kunne han omdirigere brugerne til sin egen hjemmeside eller arrangere en substitution af en privilegeret konto i webinterfacet, n\u00e5r den indskudte JavaScript-kode blev udf\u00f8rt af webstedets administrator. Med adgang til webinterfacet kunne angriberen f\u00e5 udf\u00f8rt sin egen PHP-kode p\u00e5 serveren<\/a>.
\n
Kilde: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 WordPress-\u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 OptinMonster, \u0438\u043c\u0435\u044e\u0449\u0435\u043c \u0431\u043e\u043b\u0435\u0435 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u0430 \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0445 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043e\u043a \u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0432\u044b\u0432\u043e\u0434\u0430 \u0432\u0441\u043f\u043b\u044b\u0432\u0430\u044e\u0449\u0438\u0445 \u0443\u0432\u0435\u0434\u043e\u043c\u043b\u0435\u043d\u0438\u0439 \u0438 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2021-39341), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0440\u0430\u0437\u043c\u0435\u0441\u0442\u0438\u0442\u044c \u0441\u0432\u043e\u0439 JavaScript-\u043a\u043e\u0434 \u043d\u0430 \u0441\u0430\u0439\u0442\u0435, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0435\u043c \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0435 \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u0432\u044b\u043f\u0443\u0441\u043a\u0435 2.6.5. \u0414\u043b\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u0447\u0435\u0440\u0435\u0437 \u0437\u0430\u0445\u0432\u0430\u0447\u0435\u043d\u043d\u044b\u0435 \u043a\u043b\u044e\u0447\u0438 \u043f\u043e\u0441\u043b\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 OptinMonster \u0430\u043d\u043d\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043b\u0438 \u0432\u0441\u0435 \u0440\u0430\u043d\u0435\u0435 \u0441\u043e\u0437\u0434\u0430\u043d\u043d\u044b\u0435 \u043a\u043b\u044e\u0447\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a API \u0438 \u0434\u043e\u0431\u0430\u0432\u0438\u043b\u0438 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-102176","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47S\u00e5rbarhed, der muligg\u00f8r inds\u00e6ttelse af JavaScript-kode gennem WordPress-pluginet OptinMonster 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